I never even iron my binding in half any more before applying it to the quilt and I learned this "non- doing trick" right here and it works great for me. Not bragging but very rarely have trouble.
The idea that was posted on the QB explained that by not ironing the binding in half and just folding the edges together as you sew it to the quilt actually makes it easier to then fold over to the back without having to fight with the pleat made by ironing. The binding just rolls right over the edge of the quilt for hand sewing. It sure saves time and is very easy this way.
I think the idea of zig-zagging the binding is a great idea for everyone with concerns about their binding and can help build confidence. I love to do binding. I always have and I like it even more now.
peace